半半路路（bàn bàn lù lù），是一个常用的成语，指的是走了一半的路程，也可以用来形容做事情还未完成或者达到目标的一半。

How to pronounce: bàn bàn lù lù [bahn bahn loo loo]

Usage:

1. Used to describe that half of the journey has been completed.

2. Can also be used to describe that a task or goal is only halfway done.

Example sentences:

1. 我们已经走了半半路路，还有一段距离才能到达目的地。

We have already walked half of the journey, there is still a distance to go before reaching our destination.

2. 这个项目还处于半半路路的阶段，需要更多时间和努力才能完成。

This project is still at the halfway stage, it will take more time and effort to complete.

3. 我们已经做了很多工作，但是只完成了任务的半半路路。

We have done a lot of work, but we have only completed half of the task.

4. 他们已经结婚五年了，但是感情似乎还处于半半路路的状态。

They have been married for five years, but their relationship seems to be only halfway there.

5. 虽然我们已经取得了一些进展，但是我们仍然只能说是在这项计划的半半路路上。

Although we have made some progress, we can still only say that we are only halfway through this plan.

Synonyms and usage:

1. 半途而废（bàn tú ér fèi）: to give up halfway, not finish something that has been started.

2. 一半一半（yī bàn yī bàn）: half and half, equal division or sharing.

3. 半路出家（bàn lù chū jiā）: to become a monk halfway through one's life, to change one's career midway.

4. 半途而退（bàn tú ér tuì）: to retreat halfway, give up before reaching the goal.

5. 半途而废的人永远无法成功。

Those who give up halfway can never succeed.

Editor's summary:

半半路路是一个形容词，用来描述走了一半的路程或者做事情还未完成的状态。它可以用来形容旅程、任务、计划、感情等。与之类似的成语还有“半途而废”、“一半一半”等，都带有“一半”的意思。使用时需要注意上下文，避免歧义。